A disc motor

Abstract

The invention provides a disc type motor which comprises stator discs, a stator core, a rotor disc, a permanent magnet, a rotating shaft, a fixing disc and bearings. A certain number of narrow recessed troughs and wide recessed troughs are uniformly distributed on inside of each stator disc in a circumferential direction. The two kinds of grooves are stacked for forming phi-shaped recessed troughs. The stator core is embedded into the recessed troughs. The stator core is obtained through laminating U-shaped silicon steel plates. A winding coil winds the center of the stator core. The rotor disc is arranged between the two stator discs and are fixed through the fixing disc and the rotating shaft. Two sides of the rotor disc are respectively provided with a bearing. Two circles of square holes are uniformly distributed at the circumference of the rotor disc. The number of the square holes in the inner circle is same with that of the square holes in the outer circle. Furthermore the square holes in the inner circle are strictly aligned with the square holes in the outer circle in a radial direction. Axially magnetized square permanent magnets are embedded into the square holes. The magnetic poles of the permanent magnets are alternatively arranged in the circumferential direction. The polarities of two permanent magnets in the radial direction are opposite. The stator discs, the rotor disc, the rotating shaft and the fixing disc of the disc type motor are made of an ultrahigh molecular weight polyethylene material.

Description

technical field [0001] The invention relates to a disc motor. Background technique [0002] Disk motors have been widely used in wind power generation, electric vehicles and other fields. [0003] There are two main types of stators for traditional disc motors. One is that the stator core is wound into a disc shape with silicon steel sheets, and the coils are slotted on the two end faces of the disc respectively. The yoke of this stator core is longer, occupying more volume and weight, and Yoke loss occurs. The other is the coreless structure. The armature winding of this structure is made of multi-layer and multi-row enameled wire. During the manufacturing process, high-precision winding machines and special fixtures are required. The production process is complicated and the production efficiency is low. . In addition, since the stator of this structure is an air-core coil, the actual air gap of the motor is relatively large, so the magnetic flux leakage of the magneti...

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to overcome the disadvantages of the existing disc motors, such as heavy weight, low power density, and difficult processing, and propose a disc motor that is light in weight and easy to process and manufacture.

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